XPS STUDY OF X-RAY INDUCED DEGRADATION OF POLYVINYLCHLORIDE FILMS

Ji Kejian; Zhang Yinsheng; Zhang Shufang; Duan Zhiyuan

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XPS STUDY OF X-RAY INDUCED DEGRADATION OF POLYVINYLCHLORIDE FILMS

更新时间：2023-04-23

- XPS STUDY OF X-RAY INDUCED DEGRADATION OF POLYVINYLCHLORIDE FILMS
- Journal of Radiation Research and Radiation Processing Vol. 9, Issue 1, Pages: 61-64(1991)
- 作者机构：
  
  1.山东非金属材料研究所，济南
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Ji Kejian, Zhang Yinsheng, Zhang Shufang, et al. XPS STUDY OF X-RAY INDUCED DEGRADATION OF POLYVINYLCHLORIDE FILMS. [J]. Journal of Radiation Research and Radiation Processing 9(1):61-64(1991)
DOI：

Ji Kejian, Zhang Yinsheng, Zhang Shufang, et al. XPS STUDY OF X-RAY INDUCED DEGRADATION OF POLYVINYLCHLORIDE FILMS. [J]. Journal of Radiation Research and Radiation Processing 9(1):61-64(1991) DOI：

摘要

利用X射线光电子能谱（XPS）研究了聚氯乙烯（PVC）薄膜在超高真空下X射线辐照所引起的表面组成变化。研究结果表明：（1） PVC在X射线辐照下发生分解并释放出HCl，生成了较长序列的共轭双键结构。（2） PVC的降解反应存在着自加速作用，并且自加速作用的程度与辐照功率有关。（3）在辐照初期，PVC的失氯量只与辐照时间有关，而与深度无关，当辐照一定时间后，PVC分解加速，生成的HCl不能及时地自表面逸出，导致氯元素的表面富集。（4） X射线辐照时间越长，PVC的失氯量越大；X射线辐照功率越大，失氯量也越大。

Abstract

The changes of surface composition of polyvinylchloride (PVC) films induced by X ray in ultrahigh vacuum are studied using X ray photoelectron spectroscopy(XPS). The results show: (1) The degradation of PVC occurs accompanied with the elimination of HCl and the formation of polyene sequence of longer length. (2) Selfacceleration exists in the degradation of PVC, and it is concerned in the power of irradiation. (3) During initial periods irradiated, the loss of chlorine is only concerned in time, and not in depth: after a time, the degradation is accelerated, the surface enrichment of Cl is observed because HCl can not be in time eliminated from the surface.(4) The longer the irradiation time, the more the loss of chlorine: the more the power of irradiation, the more the loss of chlorine.

关键词

XPS聚氯乙烯X射线

Keywords

XPSPolyvinylchlorineX ray

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